Water heater



L. G.- LIPPMAN AND F. E. DIXON.

TER ER.

APPL N HL 5,1920.

1,405,789. Patented Feb. 7, 1922.

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LII-PMAN, on yoivxnas, new Yemenite FREDERICK E, DIXON, or SCOTCH PLAINS, new JERSEY.

W'ATER HEATER.

Application filed June 5, 1920. Serial No. 386,915.

To all whom it may concern."

Be it known that we, Louis G. Lrrremn and Frnnnnron E. DIXON, citizens of the United States, and residents, respectively, of the city of; Yonkers, county of lVestchester, and State f New York, and town of Scotch Plains, county of Union, State of New Jersey, have invented certain new and useful Improvements in Water Heaters, of which the following is a specification.

This invention relates to water heaters and has for its object the construction of a stove grate, generally spiralin outline, such spirals being hollowed to form pipes in a hot water system. i I

Fig. 1 is a plan view partly in section of such grate and Fig. 2 is a cross section on line 22 of Fig, 1. In the figures, 1 is the grate consisting of a special hollow pipe system 2 terminating near its center in a threaded-connection 3 communicating withan inlet pipe 4 designed to lead the cold water from a tank above the apparatus. "The pipe system of the grate terminates in a. threadedconnection 5 and outlet pipe 6 designed tolead the heated water to the tank. The pipes constituting the grate have preferably a series of spider arms 7, formed integrally with the pipes to furnish a stronger rest for any cooking utensil that may be placed on the stove. The grate does not differ in position from any other grate in that it rests directly on the upper plate of the stove 8, and can be lifted off in the usual way when the connections 3 and 5 are disconnected. The coils thus formed are heated by a flame below and likewise objects placed on the coils areheated as on an ordinary grate.

Our device has not the disadvantage of other combinations of this general character in that it is not a carrier of gas or fuel and if there is any disarrangement of the device the water connections can be disconnected and the grate used, as such, undisturbed by the passage of water. If it is desired to clean the grate it can be readily disconnected in the same way and cleaned and put back. The radial spider arms 7 are not absolutely necessary, but they are useful in S ecification of Letters Patent.

7 taking the strain off the pipes themselves. In

the claims they have been referred to as spider arms butthey can be of any form or number. The device is adapted for oil, gas, electric or coal stoves and can be'used singly or 1n groups and connections made accord. ingly.

We have found that excellent results are obtainedwhen the cross section of the cold water and the hot water outlet is smaller than the cross section of the pipes forming the spiral grate as this will provide for the Patented Feb. '7, 1922.

area than the coils now inuse, the coils being v 7 thus elongated to furnish a larger cubical "content in a limited space.

e claim:

1. A. combination water heater and grate for stoves comprising an integral hollow tubular spiral grate, a cold water inlet and a hot water outlet, the grate being adapted to rest directly on the top of the stove and to receive cold water from the inlet through an opening in the base of the spiral at the center thereof, the water being heated in the hollow spiral from below, and passing through the outlet at the end of the spiral.

2. An integral water heater and grate for stoves comprising a hollow chamber of eccentric spiral form adapted to receive cold water to be heated from below and having a series of spider arms placed across the spiral and integral with the upper walls thereof forming a rest for articles placed on the grate.

3. An integral water heater and grate for stoves, comprising a hollow tubular spiral grate, provided with a series of spider arms placed across the spiral and integral therewith, a cold water inlet and a hot water outlet, the grate being adapted to rest directly on the top of the stove and to receive cold water from the inlet through an opening in the base of the spiral at the center thereof, the water being heated in the hollow spiral from below, and passing through the outlet at the outer end of the spiral.

4. An integral waterheater and grate for stoves, comprising a hollow tubular spiral grate, a cold water inlet of smaller cross from below, and passing through thecutlet. section than the tubes of the grate, and a at the outer end of the spiral. i hot water outlet, the grate being adapted Signed at New'Y0rk city in the county 10 to directly rest on the top of the stove and of New York and State of New York this 5 to receive cold water from the inlet through 3rd day of June A; D. 1920.

an opening in the base of the spiral thereof, LOUIS Gr. LIPPMAN. v the Water being heated in the hollowrspiral r FREDERICK E. DIXON. 

